It doesn't work with all Sony VPCCW1* laptops, however. I had to make the following changes to get it working for my Sony VPCCW17FX (NVidia g210m):

nvidiabl-laptops.h:

Code:

// This has to be BEFORE the general VPCCW1 line
NVIDIABL_DECLARE_LAPTOP_MODEL("Sony Corporation", "VPCCW17FX", 0x0a74, 0, 1024, 127000),
NVIDIABL_DECLARE_LAPTOP_MODEL("Sony Corporation", "VPCCW1", 0x0a2a, 0, 7000, 2500000),